Table 1: Definitions and distributions of asthma phenotypes.

Phenotypes ( )Onset ≤3 YearsOnset >3 yearsAsthma at 7 yearsAsthma at 13 and/or 21 years

Healthy = no asthma (NA) ( , 89%)NoNoNoNo
Early onset asthma (EOA) ( , 3.1%)YesYes
Late onset asthma (LOA) ( , 8.4%)NoYesYes